My Kodak / Kodak style, whatever it is.....has a 45mm hole. It's painted black, and has a couple holes drilled in it, it appears someone screwed a smaller lensboard on it at some point in its life. I got it for my 5x7 and it turns out it's a few mm too wide and my Compur #00 almost fits in it.
Your Graphic View board, will have a 25mm opening, or at least big enough to hold a Graphic Kodak Supermatic No. 2 off of a Speed Graphic. It will be recessed for a Copal shutter, at least that's the only was I can see this fitting.
I have the original Graflex board which is like a 3" or something small and also black, that I would trade too.
Your Graphic View board, will have a 25mm opening, or at least big enough to hold a Graphic Kodak Supermatic No. 2 off of a Speed Graphic. It will be recessed for a Copal shutter, at least that's the only was I can see this fitting.
I have the original Graflex board which is like a 3" or something small and also black, that I would trade too.